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Class Information
Number: 327/352
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific input to output function > Logarithmic > With summing
Description: Subject matter wherein an output signal is produced that represents the algebraic sum of applied input signals.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7453309 |
Logarithmic temperature compensation for detectors |
Nov. 18, 2008 |
| 7340227 |
Wireless communication system and semiconductor integrated circuit |
Mar. 4, 2008 |
| 7268609 |
Logarithmic detector or logarithmic amplifier having chopper stabilized logarithmic intercept |
Sep. 11, 2007 |
| 7026856 |
Continuous-time filter |
Apr. 11, 2006 |
| 7002395 |
Demodulating logarithmic amplifier |
Feb. 21, 2006 |
| 6982587 |
Equalizing transceiver with reduced parasitic capacitance |
Jan. 3, 2006 |
| 6879189 |
Asynchronous fault detection circuit for a PWM driver |
Apr. 12, 2005 |
| 6842062 |
Integrated electronic circuit including non-linear inductor devices |
Jan. 11, 2005 |
| 6734712 |
Logarithmic amplifier |
May. 11, 2004 |
| 6731918 |
Signal strength detecting device with little temperature dependence |
May. 4, 2004 |
| 6559705 |
Circuit arrangement |
May. 6, 2003 |
| 6483367 |
Circuit arrangement for generating and amplifying an amplitude limited DC signal |
Nov. 19, 2002 |
| 6466085 |
Amplifier circuit and preconditioning circuit for use in amplifier circuit |
Oct. 15, 2002 |
| 6211717 |
Multiple differential pair transistor architecture having transconductance proportional to bias current for any transistor technology |
Apr. 3, 2001 |
| 5977812 |
Circuit and method for providing a generally log logarithmic transfer function |
Nov. 2, 1999 |
| 5952867 |
Exponentiator circuit and method for generating decibel steps of programmable current gain |
Sep. 14, 1999 |
| 5886559 |
Signal generating apparatus and method |
Mar. 23, 1999 |
| 5839060 |
Logarithmic level detector and a radio receiver |
Nov. 17, 1998 |
| 5818279 |
Circuit arrangement comprising a logarithmic transfer function |
Oct. 6, 1998 |
| 5774008 |
Computational circuit |
Jun. 30, 1998 |
| 5666080 |
Computational circuit |
Sep. 9, 1997 |
| 5646569 |
Method and apparatus for AC coupling |
Jul. 8, 1997 |
| 5631594 |
Tunable logarithmic amplifier circuit using cascaded triple-tail cells |
May. 20, 1997 |
| 5570055 |
Demodulating logarithmic amplifier |
Oct. 29, 1996 |
| 5561392 |
Logarithmic amplifier employing cascaded full-wave rectifiers including emitter-coupled pairs with unbalanced emitter degeneration as logarithmic elements |
Oct. 1, 1996 |
| 5539916 |
DMA control for continuing transfer to input/output device in a cycle steal mode |
Jul. 23, 1996 |
| 5521542 |
Logarithmic amplifier circuit using triple-tail cells |
May. 28, 1996 |
| 5506537 |
Logarithmic amplifying circuit based on the bias-offset technique |
Apr. 9, 1996 |
| 5475328 |
Logarithmic intermediate frequency amplifier circuit operable on low voltage |
Dec. 12, 1995 |
| 5471166 |
Logarithmic amplifying circuit using quadritail cells |
Nov. 28, 1995 |
| 5467046 |
Logarithmic intermediate-frequency amplifier |
Nov. 14, 1995 |
| 5357155 |
Dual input signal summer circuit |
Oct. 18, 1994 |
| 5319264 |
Logarithmic amplifying circuit |
Jun. 7, 1994 |
| 5221907 |
Pseudo logarithmic analog step adder |
Jun. 22, 1993 |
| 5070303 |
Logarithmic amplifier/detector delay compensation |
Dec. 3, 1991 |
| 5057717 |
Logarithmic amplifier circuit |
Oct. 15, 1991 |
| 5049829 |
Logarithmic amplifier with sequentially limiting amplifier stages |
Sep. 17, 1991 |
| 4990803 |
Logarithmic amplifier |
Feb. 5, 1991 |
| 4933641 |
Extended dynamic range logarithmic if amplifying apparatus and method |
Jun. 12, 1990 |
| 4908529 |
Logarithmic amplifier comprising MESFET distributed amplifiers connected in cascade |
Mar. 13, 1990 |
| 4885483 |
Logarithmic amplifier |
Dec. 5, 1989 |
| 4716316 |
Full wave, self-detecting differential logarithmic rf amplifier |
Dec. 29, 1987 |
| 4574251 |
Logarithmic digitally variable gain controlled amplifier |
Mar. 4, 1986 |
| 4568978 |
Method of a circuit arrangement for producing a gamma corrected video signal |
Feb. 4, 1986 |
| 4531069 |
Logarithmic amplifiers |
Jul. 23, 1985 |
| 4477779 |
Dual channel gated peak detector |
Oct. 16, 1984 |
| 4454433 |
Multiplier circuit |
Jun. 12, 1984 |
| 4442549 |
Meter drive circuit |
Apr. 10, 1984 |
| 4434380 |
Compensation for VCA OP amp errors |
Feb. 28, 1984 |
| 4415866 |
Circuit for dynamic compression and/or expansion |
Nov. 15, 1983 |
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